Hermann bormann



(No Model.)

H. BORMANN.

METHOD OF AND APPARATUS FOR MAKING ROOFING FABRICS. No. 427,146. Patented May '6, 18*90.

UNITED TATES ,FFICE,

HERMANN BORMANN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO J. WALTER DOUGLASS, OF SAME PLACE.

METHOD OF AND APPARATUS FOR MAKING ROOFING FABRICS.

, SPECIFICATION forming part of Letters Patent No. 427,146, dated May 6, 1890.

Application filed December 4:1 1889.

To all whom zit may concern.

Be it known that I, HERMANN BORMANN, a subject of the Emperor of Germany, but now residing at the city of Philadelphia, in the 5 county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in the Method of and Apparatus for Making a Roofing Fabric, of which the following is a specification.

My invention relates to the manufacture of a silica-coated roofing fabric provided with a marginal edge or edges, and embraces the method of and apparatus for obtaining such a product.

Heretofore roofing fabrics composed of felt or paper have generally been prepared by first coating the entire surface of the sheet of felt or paper with tar or pitch or permitting the tar or pitch to permeate the body of the felt or paper, and then applying to one side either a roofing compound or composition or a sheet of burlap or other similar material to form the body of the roofing fabric, and then applying to the upper surface of the body a coating of sand after the same had cooled off, and in the making of such a fabric the steps not only had to be performed quickly, but it required the exercise of particular skill to insure an even distribution of the sand over the top surface of the product. Moreover, one of the most serious objections experienced in the use of such fabrics has been the inability to secure a water-tight joint at the points where the coated and sanded sheets overlapped one another, and invariably resulting in a short time in the roof leaking at said points.

My invention consists in the novel method of and compact and efficient apparatus for producing a marginal-edged and silica-coated roofing fabric; and my present invention has reference, particularly, first, to the mode of applying to or saturating a sheet of felt or paper with hot tar, pitch, or other similar composition, and, second, to the mode of applying to the tarred, coated, or saturated sheet of felt or paper a silica, and permitting it to become firmly fixed in or to the same before being laid up or formed into rolls for use.

The nature and particular features of my Serial No. 332,570. (No model.)

invention will be more fully understood from the following description, taken in connection with the accompanying drawings, forming part hereof, and in which- Figure 1 is a front elevation of an organized plant of my construction and especially adapted for carrying out the method. of producin g a marginal-edged silica-coated roofing fabric. Fig. 2 is a central section of the apparatus embodying the particular features of my invention as illustrated in Fig.1. Fig.

3 is a top or plan view thereof; and Fig. 4 is a perspective view of a roll of single-ply silicacoated fabric provided with a plain surface marginal edge made in apparatus, as is shown in Figs. 1 and 2.

Referring to the drawings for a further description of my invention, A is a brick or v other suitable form of furnace provided with i a grate a in the lower part thereof, and a chamber a located above said grate, and in which is mounted a heating-tank b, adapted to contain pitch, tar, or other material.

a is a draft-pipe connected with the fur-. nace and extending upward and around an elevated structure provided with a platform A suspended from the ceiling of a room or apartment in any preferred manner, and this pipe extending then outward through the, ceiling or roof of the building into the open air. Above the heating-tank b, and to the walls of the furnace, is supported a frame 0, to which is journaled a roller 0, for containing the uncoated felt or paper, the flanged guide-rollers d and d, and a coating-roller E 8 5 immersed in a vat and journaled to the walls thereof, and the said vat supported by the frame 0 and depending therefrom into the heating-tank h of the furnace A, and adapted to contain heated tar or pitch introduced into the same from time to time from the tank Z7. At a suitable distance above the furnace is suspended a structure with a platform A and preferably supported from the ceiling of a room, or the furnace may be located on one floor and the elevated structure provided with a platform forming the floor of the second apartment or room of the building. To the vertical support f of said elevated frame or structure is journaled a roller g, and to the vertical support f are journaled rollers h and 7t.

In the frame 0 is journaled aroller H, having a crank 2' mounted on one of the journals of said roller to permit of the actuation of said roller H to lay up the finished product thereon for use.

To the longitudinal stringers or tie-beams f is pivotally attached depending armsj and j, carrying a hopper J, provided with a handle or arm 3' This hopper is provided with a sieve or perforated bottom and adapted to contain silica or other similar material. The silica, in the movement of the hopper back and forth between the lateral tie-pieces f 5 and f of the upper frame A is distributed through its sieve or perforated bottom over the surface of the tar-coated paper or felt provided with a marginal edge or edges, which is caused to travel along over the series of rollers, as will be hereinafter more fully described.

The coating-roller E, mounted on the shaft 6, which is journaled in the frame 0, Fig. 2, is formed in two sections 6 and c. The section e is partially immersed in the tar or pitch contained in the vat c and the section 6 revolving therewith outside of the vat 6 serves as a support and guide for the uncoated marginal edge of the fabric in its passage over said roller E to and under the flanged roller d. The guide-rollers d and d are provided with flanged ends 61 to insure the proper width of margin being obtained or left 011 the fabric. The coating-roller E may be made in three parts or sections, if preferred, in order to form an uncoated marginal edge on both sides or edges of the coated sheet or layers of felt or paper. By arranging the draft-pipe substantially in the manner shown in the drawings the coated or saturated sheets of paper are maintained by the waste heat of the furnace or that passing through the draft flue in a heated condition until after receiving the coating of silica, which is distributed over the upper surface of the fabric, whence in the passage of the fabric from this point to the laying-up roller H the pitch or tarred and silica-coated sheet or sheets unite firmly with one another and thereby become perfectly solid.

The operation of the apparatus described is as follows: A fire is started in the furnace A, which heats up the pitch or tar contained in the heating-tank b. A certain quantity is poured into the small vat e suspended from the frame 0 into the tank b. The uncoated felt or paper m is passed therefrom under the flanged guide-roller cl, journaled to the frame 0, and over the section 6 of the coating-roller E, with the edge of the paper or felt adjacent or contiguous to the coated portion in contact with the section 6 of the roller E, thereby not only guiding the paper over the roller E, but serving to retain the marginal cdge free from tar or pitch, and from whence it passes under the guide-roller (Z and upward around the roller 9, and in a longitudinal or horizontal direction along under the silica-distributing hopper H, receiving the silica therefrom ,which is distributed over the coated surface adjacent or contiguous to the marginal edge or edges of the fabric, and then passes through the rollers h and h in a downward direction to the roller II, operated by the crank t in any preferred manner, thereby laying up the finished fabric in the form of rolls for use and with a marginal edge at provided along the entire length of the silica-coated fabric, as illustrated, for instance, in Fig. 4.

It will be observed that by arranging the apparatus as shown and described the coated or saturated felt or paper is maintained in a more or less heated condition until after it receives its silica, and thus the latter adheres more eagerly thereto than if the same were deposited thereon when the fabric had partially cooled off, and, moreover, the method described is not only economical from the standpoint of its manufacture, but the product obtained is much more efficient and durable in use. 7

Having thus described the nature and objects of my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The herein-described method of making a marginal-edged roofing fabric, which consists in coating or saturating the felt or similar material with pitch or tar in a heated condition adjacent to the margin or edge of the sheet or layer of felt or other material, and while maintained in'a heated condition coating its upper surface with a silica and then allowing the tar or pitch and silica to become fixed in and to the fabric, and laying up the product, substantially as and for the purposes described.

2. The combination, with a furnace provided with a heating-tank and draft-pipe, of a frame supported above said furnace and having j ournaled thereto a roller containing uncoated felt or paper, flanged guide-rollers disposed on opposite sides of a grooved or recessed roller partially revolving in a vat suspended above the heatiug-tank of said furnace, an elevated structure having guiderollers journaled thereto at each end, a hopper pivotally supported to said elevated structure and capable of being rocked back and forth, a laying-up roller journaled to the frame supported above said furnace, and means for actuating said roller, substantially as and for the purposes described.

3. The combination,with an elevated structure provided with a hopper capable of being reciprocated, and end guide-rollers, of a furnace provided with a melting-tank, and a draft-pipe extending around said elevated structure and adjacent to said guide-rollers, a frame supported above said furnace and carrying a sectional coating-roller, a vat containing a composition, guide-rollers disposed adjacent thereto, and a feed-roller, substantially as and for the purposes described.

ICC

IIO

4. The combination, with a furnace provided with a tank or vat containing a liquid, of a divided or recessed coating-roller adapted to distribute the liquid contained in said vat partially over the surface of a sheet of felt or paper, substantially as and for the purposes described.

5. In a plant for the manufacture of aroofing fabric, as described, a divided coatingroller arranged above a furnace containing a vat or tank adapted to contain tar or pitch, a draft-pipe for maintaining the coated fabric in a heated state in its passage to a hop- HERMANN BORMANN.

WVitnesses:

J. WALTER DOUGLASS, THOMAS M. SMITH. 

